triangle

turntable

traverser

scotch block

changing the direction of engine

transferring wagons to and from parallel tracks without shunting

separating all the sidings and shunting lines from main lines

preventing the vehicles from running off the track

5.5m

6.5 m

7.5 m

8.5m

(i) and (ii)

(ii) and (iii)

(iii) and (iv)

(i)and(iv)

stop

proceed

proceed cautiously

none of the above